Welding seal adhesive tape and preparation method thereof
A welding sealing and tape technology, applied in the direction of adhesives, film/sheet adhesives, etc., can solve problems such as inconvenient operation, and achieve the effect of solving inconvenient operation, protecting the bonding effect and ensuring the welding effect.
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[0031] The present invention also provides a method for preparing the welding sealing tape according to the present invention, comprising the following steps:
[0032] Extrude the raw materials of the base layer, spray hot-melt glue on the surface of the base layer in situ, and cool down to obtain the welding sealing tape.
[0033] Among them, the pressure of the nozzle when spraying hot melt adhesive wire is 2.5-4.5kgf / cm 2 .
Embodiment 1
[0037] Use ethylene-vinyl acetate copolymer (EVA) as the base material, extrude EVA into a 1.5mm thick sheet at 110°C, and spray EVA hot-melt glue online at 160°C, where the nozzle pressure is 3.5kgf / cm 2 , Welding sealing tape was obtained after cooling, and the test results are listed in Table 1.
Embodiment 2
[0039] Use EPDM as the base material, extrude EPDM into a 1.3mm thick sheet at 110°C, spray EVA hot-melt glue online at 160°C, and the nozzle pressure is 3.5kgf / cm 2 , Welding sealing tape was obtained after cooling, and the test results are listed in Table 1.
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